1. Mathematics
1º ESO
IES Granadilla de Abona

2. The Whole numbers are the “counting numbers”
when 0 is included.
0, 1, 2, 3, 4, 5, 6, 7, …
The numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 have
one digit and the numbers 10, 11, 12, 13, …
have two digits.

3. Whole numbers are made up from units, tens,
hundreds, thousands and so on.
For example:
3 . 7 5 9 . 2 3 8
UNITS
TENS
HUNDREDS
THOUSANDS
TEN THOUSANDS
HUNDRED THOUSANDS
MILLIONS
Observe that in
Spain we use the
decimal point every
three digits, while in
England they use a
comma:
3,759,238

4. 2.457.987
 Can you read this number?
two million four hundred and fifty-seven
thousand nine hundred and eighty-six.
 How many digits does it have?
It has seven digits.
 What number is in the tens place?
 What number is in the ten thousands place?
 What number is in the hundreds place?
8
5
9

5. 589.345
 Can you read this number?
Five hundred and eighty –nine thousand three
hundred and forty-five.
 How many digits does it have?
It has six digits.
 What number is in the tens place?
 What number is in the thousands place?
 What number is in the units place?
4
9
5